Finding the Fourth Proportional to 72,298.71, 108,466.76 and 42,338.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,298.71 : 108,466.76 = 42,338.25 : x
2. Step 2: Convert to fraction form
   72,298.71/108,466.76 = 42,338.25/x
3. Step 3: Cross multiply
   72,298.71x = 108,466.76 × 42,338.25
4. Step 4: Simplify right side
   72,298.71x = 4,592,292,907.42
5. Step 5: Solve for x
   x = 4,592,292,907.42/72,298.71
6. Step 6: Final answer
   x = 63,518.32